Popular questions

The three trouble codes do not constitute a diagnosis, at all. All the three codes do is point to vehicle systems, each of which in turn contain many individual parts, wiring and so forth, any of which could be the...

Hello. I recommend checking the operation of the thermostat to ensure it opens and closes at the proper temperature. You also could have some air in your cooling system causing the heating system to blow cold at inappropriate times. To...

It is very common for the cylinder head gasket on these engines to leak oil and coolant. You may have to replace the cylinder head if it is damaged. If you have water mixed in the engine oil, then...

Code P0327 stands for knock sensor bank 1. Some of the common causes for this code are: a problem at connector C627 or C636, a problem with the power train control model (PCM) or a problem with the knock sensor...

Hello. It is difficult to get much better fuel economy then what you are currently getting. The only way is by driving the car easy and maintaining it. Using synthetic oil, a high flow air filter, making sure that the...

There is a tensioner pulley that keeps the correct amount of tension on your serpentine belt. When these bearings wear out, they can cause this type of a whistling sound that you describe. This is a quick fix and should...

Hi there! It's likely that there is a ground connection compromised, loose, corroded, or power shortage. If the starter, battery, and the alternator are testing out to be fine then I suggest looking towards the connections and wiring. Start with...

If you already replaced the sensor then now it will need that connector you've mentioned. Replacing it may fix the code P0502. The code P1406 is for the EGR valve position, you would need to have the valve tested to...

Check for problem codes - you mention that the Check Engine Light is on. This could be the torque convertor clutch not releasing as you slow down, or not locking up smoothly when you reach 40-50 mph accelerating. And yes,...

Hello. This problem is common to Hummer H3s. It is an involved fix, and most of the incidences are related to the front drain tubes, as the vehicle sits at a slight rake to the front. Access to these is...

It sounds like you are getting a bad reading from the crankshaft or camshaft sensor. Have the computer scanned and the data stream monitored for problems with the two sensors to see which one is causing the stall and erratic...

Your CD player definitely should not be running after the key is off and out of the car. It will certainly drain your battery. So the good news is you can be reasonably certain about what is killing your battery....

Hi Tyler. It's very difficult to determine a part name without seeing it. Unfortunately, since we can't have images attached through this platform, it's also hard for us to review it. One thing you could do perhaps is to take...

It sounds like you may have a lock solenoid failure. A lock solenoid is a magnetic device that pulls the lock mechanism to lock and unlock the door. If you can hear the solenoid clicking in the door, you may...

If you can hear the chain whining while you drive, it's time to quit driving the car. If the timing chain breaks while you are going down the road, the damage that will occur will probably mean replacing the engine....

This truck came with a three different size engines. The most common reasons for no starts are the engine timing belt is broken. The fuel pump is not pumping and would need replacement. A qualified mechanic would be able to...

A possible reason the car is not shifting well now is the transmission fluid is at the wrong level, in addition to the transmission fluid being contaminated with engine oil. First, check the level and see if the level is...

Ignition coils can be individually replaced without concern as to engine operation however fuel injectors are a different matter. If you replace one fuel injector, the other 7 fuel injectors should be removed from the fuel rail and professionally cleaned....